iBLJa1Gu008596: .. did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA

[Oliver Hookins]

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Steve Hickel wrote:
> I believe it is a What's up gold server checking the smtp service is
> running. That would make sense.
>
> Obviously not a MailScanner issue. Thanks all!
>
> Steve
That sounds familiar. We also use a similar product - Servers Alive -
that can do checks on a number of different ports. If you select the
SMTP check it connects to that port, sends a HELO command and then a
QUIT straight after it receives a response.

Regards,
Oliver

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